一个简单的实现流密码RC4的算法，使用在单片机上，输出为同一通道。输入可以自己修改。经过试验测试，算法是正确的。-The realization of a simple RC4 stream cipher algorithms, used in single-chip microcomputer, the output for the same channel. Can input their own modifications. After the pilot test, the algorithm is correct.